Fish loosing slime coat

[SLS_23]

Have you tested your water?

Yes

If I did not test my water...

...I recognize that I will likely be asked to do a test, and that water tests are critical for solving freshwater health problems.

Do you do water changes?

Yes

What percentage of water do you change?

41-50%

How frequently do you change your water?

Every two weeks

If I do not change my water...

...I recognize that I will likely be recommended to do a water change, and water changes are critical for preventing future freshwater health problems.

Hi, does anyone know what to do? My fish are losing their slime coat. All water readings are fine. I change the water ½ every 2 weeks. As soon as I saw it yesterday I changed ¾ of the water and added salt, but I couldn't save 3pcs of B. tigrinum. Anyone know what it is? Will it save the other fish or would it be better to euthanize them all as a precaution? Thank you

 

[Milingu]

Looks like oodinium - velvet disease.

 

[SLS_23]

Looks like oodinium - velvet disease.

Thank you for the reply, it is similar in appearance, but it doesn't fit the course of the disease at all. The fish got it completely all in the aquarium in one no(except 3x butterfly fish) and they are dying terribly fast. I check the fish every day, especially the brachyplatystomas, but they died first. Before I found the first brachyplatystoma, I didn't discover any symptoms.

 

[SLS_23]

So the rest of fishes is dying too. I tried fmc and it didnt help.



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